Decades before GPS existed, Casio dropped the MAP-100 — a wristwatch that could literally trace routes on paper maps. 🗺️ It had a small rolling gear on a swing-out arm that tracked distance as you moved it across the map, then displayed the real-world distance in miles or kilometers on its digital screen. Mechanical precision digital calculation = one of the first-ever wearable navigation tools. A reminder that innovation didn’t start with smartphones — it’s been around, quietly flexing, for de